Self-threading shuttle.



H. A. KENNEDY..

SELF THREADING SHUTTLE.

APPLICATION FILED JULY3I, 1915.

1,174,426. Papented Max. 7, 1916.

HENRY A. KENNEDY, 0E PROVIDENCE, RnoDE ISLAND, assIe'NoR. TO HEEMANN E.o.

MORLOCK, 0E PROVIDENCE, ODE ISLAND.

SELF-THREADING SHUTTLE.

Specification of Letters Patent.

Patented Mar. a, rare.

Application filed July 31, 1915. 7 Serial No. 42,958.

To all whom it may concern Be it known that I, HENRY A. KENNEDY, acitizen of the United States, residing at Providence, in the county ofProvidence, State of Rhode Island, have invented certain new and usefulImprovements in Self- Threading Shuttles, of which the followingshuttle, and arranged to be held in position without the use of pins,screws, bolts, clamps or other fastening-means.

Further objects of my improvements are to provide for more reliableautomatic threading of the shuttle-eye, to prevent the yarn fromwhipping out of place after the shuttle has been threaded, and to'renderthe device more economical to manufacture, easier to apply and moredurable in use.

The invention is fully described in the following specification,illustrated by the accompanying drawings, erence characters designatelike parts.

. In the drawings: Figure 1 is a plan view of the delivery-end of ausual form of broad-loom shuttle showing my improved delivery-eyeapplied thereto; Fig. 2, a side view of the same; Fig. .3, atransverse,sectional view of the shuttle on the line XX of Fig. 2, looking in thedirection indicated by the arrow 00,- Fig. 4:,a similar view also takenon the line X-X, but looking in the opposite direction from thatindicated by the arrow m; Fig. 5, a plan view of the deliveryeye byitself; and Figs. 6 and 7 two different side views of the same.

Referring first to Figsx5, 6 and 7, my improved guide or delivery-eye ispreferably made in the form of a substantially rectangular block Bhaving oneof its ends curved or rounded off in a vertical, cylindricalplane. This shape adapts it to be easily molded from porcelain, glass orother vitreous material capable of resisting'wear and abrasion, and alsoprovides for its insertion in the shuttle after a very simple operationof cutting away the wood thereof .to form the recessed ledge Z),

the center of the block.

in which like refas more fully explained hereinafter. The upper, fiatface of the block 13 is cut away or stepped down across its width at 7)see Fig. 7 Overhangingthe ledge 12. is a downwardly curved lip or flangeZ, which, with the I rounded shoulder 6, forms a sort of hook extendingclear across the top of the block B. Reaching up through the block fromits bottom. to the ledge 12 is a vertical hole 71. which underlies thelip Z at approximately Extending laterally from the hole It is atransverse bore 0 'which opens on the rounded end of the blockB to adaptit to serve as a threadpassage for the yarn as it delivers from the sideof the shuttle. From one edge of the transverse shoulder 79 the block Bis cut through with a relatively narrow slit 2? reaching into the boreor thread-passage c. The slit t is inclineddownwardly from theledge-portion b and develops a helical contour; as it extends around thecurvedv end of the block to a point midway thereof.

The} end of the helix intersects the outer face of the block at a pointbelow the opening of the thread-passage c and is connected therewith bya vertical slit or cut cl.

It will be observed from the foregoing description that my improvedthread-guide is extremely. simple in form and structure, and it can befitted to the shuttle in a very simple manner.

Referring now to Figs. 1, 2, 3 and 4, the

delivery en of-the shuttle S is provided with the usual. verticalthread-slit s extending longitudinally forward from the bobbin-chamberor recess B. At 8 the top of the shuttle is'cut away or recessed fromthe edge of the slit 8 to its delivery side and a transverse slit s-extends at an angle down into a circular side-opening 0 which opensinto the usual longitudinal thread-groove g. The upper end of the slit.9 forms an inclined shoulder a to guide the yarn down into theside-opening 0 of the shuttle with which the thread-passage c of thedeliveryeye or block B is adapted to register. To insert the block B inplace it is only necessary to bore up through the bottom of the shuttleand chisel out an opening adapted to conform to the shape of the block.

Th opening 6, see Figs. 3 and 4, is made of sufficient depth so thatwhen the top of the block seats against its end the "thread-pas;

of the shuttle.

sage a will register with the side-opening 0 After the block is thus setin place, a wooden plug or cap is is fitted to the opening 6 abuttingthe under side of the block, and is then planed off flush with thebottom of the shuttle. The cap is glued or cemented in place or may beheld by a suitable metal plate fastened to the bottom of the shuttle ifdesired. The fiat sides of the block B abut the sides of the opening 6to keep it from turning and the block is entirely inclosed andsurrounded by the walls of the opening to protect it from damage. At therear of the block B the wood of the shuttle is cut away to form asubstantially cylindrical, horizontal thread-passage p which alines withthe curved opening under the lip Z of the block B. Usually a piece offelt or similar material is cemented in place at the mouth of thethread-passage p to serve as a tensioning-means for the yarn.

In threading the shuttle the yarn is drawn off from the bobbin or cop Yand led forward to adapt it to enter the vertical thread-slit s. \Vhenthe shuttle is put into operation the end of the yarn is secured at anappropriate point to draw the yarn back through the inclined slit s astheshuttle is thrown across the loom. It will be noted from Figs. 3 and4 that the curved lip Z on the top of the block B lies directly underthe thread-slit s, but without obstructing the passage of the yarntherethrough. Therefore as the yarn y is drawn down into the slit 3 itwill ride over the curved edge of the lip Z and seat against the flatledge Z). Now, as the yarn is drawn back and down through the transverseslit 8 it will be caused to enter through the contracted opening t onthe side of the block B and will thence be directed up through the slit(Z into the lateral thread-passage 0. As the yarn 3 delivers from thebobbin Y it draws across the felt f and through the thread-passage p,thence across the ledge I) of the block B while leading under the lip Z,and then down through the hole It and out through the lateralthread-passage 0.

Referring to Figs, 2, 3 and 4, it is to be noted that the edge of theside-opening 0 of the shuttle S overlaps the slit d where it leads upinto the thread-passage a while leaving a contracted opening 0', seeFig. 4, between the wood of the shuttle and the side of the block. Thisallows the yarn to pass from the slit t up through the slit d to thethread-passage 0, but prevents the yarn from whipping out of itsthread-eye during the operation of the shuttle. In the same way thecurved lip Z acts as a barrier to prevent the yarn from riding up out ofthe slit 8 when the tension on the yarn is slackened.

My improved delivery-eye or thread-guide is so simple in design andsmall in dimensions as to render it capable of being manufactured atvery small cost, while being adapted for molding from porcelain orsimilar material. It can be applied to the shuttle after cutting awaybut a very slight portion of the wood, and hence the shuttle is notbadly mutilated or weakened as is usually the case. When in place it iscompletely inclosed and protected by the walls of the shuttle so thatthere is little liability of its becoming cracked or broken. Beingconstructed of porcelain or other vitreous inaterial it is practicallyproof against wear from the abrasive action of the yarn drawing throughits thread-passages and hence is much more durable than the usual metalthread-eye. It can be secured in place in the shuttle without the use ofpins, bolts, screws or other similar fastening-devices and therefore ismuch easier to apply, and less liable of getting loose or becomingdetached. In operation the shuttle is most easily and quickly threadedthrough the automatic action of the eye and in addition my improvementgives a particularly neat and finished appearance to the whole shuttle.

Various modifications might be made in the form and structure of myimproved device without departing from the spirit or scope of theinvention; therefore,

lVithout limiting myself to the exact embodiment shown and described,what I claim .is:- r

1. A delivery-eye for loom-shuttles molded from vitreous material, suchas porcelain or glass, in the form of a substantially rec tangular blockhaving one of its ends rounded off in a vertical. plane and its toprecessed to form a transverse shoulder providing a ledge across whichthe yarn is adapted to draw, said block formed with a vertical holeextending through it from top to bottom with the side of the holeadjacent the shoulder on the top of the block, and with a lat eralthread-passage leading from the axial hole to the rounded side of theblock and communicating with the top of the block through a relativelynarrow helical slit cut through the rounded side of the block from apoint below the end of the lateral thread-passage and communicatingthere with through an abrupt bend at its end 2. A delivery-eye forloom-shuttles constructed in the form of a substantially rectangularblock having one ofits ends roun ded off in a vertical plane, the top ofthe block being stepped down to form a recessed ledge with a shoulderprojecting outwardly in a lip curved downwardly to overhang the ledgeacross its width, said block being also formed with a vertical holereaching up through the ledge beneath the overhanging lip, a lateralthread-passage extending from the vertical hole to the rounded end ofthe block, and an angularly-disposed thread-slit cut through the side ofthe block downwardly from the top of the ledge and terminating in anabrupt bend leading into the bottom of the lateral thread-passage.

3. In a self-threading shuttle provided with the longitudinalbobbin-chamber having a vertical thread-slit leading forwardlytherefromand communicating through a lateral slit with the side of the shuttle,said lateral slit terminating in a circular sideopening disposed in thelongitudinal threadgroove on the side of the shuttle, the combination ofa substantially rectangular block formed with one of its ends roundedoffv in a vertical plane and fittedto a correspondingly-shaped openingin the bottom of the shuttle, the top of the block being cut away toform a recessed ledge having an overhanging, downwardly-curved lipunderlying Copies of this patent may be obtained for five cents each, byaddressing the the longitudinal thread-slit of the shuttle, said blockalso formed with a vertical hole opening on the top of the ledge and atransverse thread-passage leading therefrom to the rounded end of theblock to register with the side-openingof the shuttle, and a contractedthread-slit cut through the forward side of the block from the top ofits ledge and extending downwardly at an angle to a point beneath theouter end of the trans verse thread-passage with which it communicatesthrough an abrupt bend.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY A. KENNEDY.

\Vitnesses:

HERBERT K. ALL/ARD, GEO. A. WHITE, Jr.

Commissioner of Patents,

Washington, D. 0. V

